Make spacing between uber tray items consistent with UI spec.

ash/system/tray/system_tray_item.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_SYSTEM_TRAY_SYSTEM_TRAY_ITEM_H_
 #define ASH_SYSTEM_TRAY_SYSTEM_TRAY_ITEM_H_
 
 #include "ash/ash_export.h"
 #include "ash/system/user/login_status.h"
 #include "ash/wm/shelf_types.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 
 namespace views {
 class View;
 }
 
 namespace ash {
 
+namespace internal {
+class TrayItemView;
+}
+
 class ASH_EXPORT SystemTrayItem {
  public:
   SystemTrayItem();
   virtual ~SystemTrayItem();
 
   // Create* functions may return NULL if nothing should be displayed for the
   // type of view. The default implementations return NULL.
 
   // Returns a view to be displayed in the system tray. If this returns NULL,
   // then this item is not displayed in the tray.
@@ skipping 26 matching lines @@
   // Updates the tray view (if applicable) when the user's login status changes.
   // It is not necessary the update the default or detailed view, since the
   // default/detailed popup is closed when login status changes. The default
   // implementation does nothing.
   virtual void UpdateAfterLoginStatusChange(user::LoginStatus status);
 
   // Updates the tray view (if applicable) when shelf's alignment changes.
   // The default implementation does nothing.
   virtual void UpdateAfterShelfAlignmentChange(ShelfAlignment alignment);
 
+  // Sets the empty border of an image tray item for adjusting the space
+  // around it.
+  virtual void SetTrayImageItemBorder(views::View* tray_view,
+                                      ShelfAlignment alignment);
+  // Sets the empty border around a label tray item for adjusting the space
+  // around it.
+  virtual void SetTrayLabelItemBorder(internal::TrayItemView* tray_view,
+                                      ShelfAlignment alignment);

[sadrul, 2012/07/23 16:25:03]

Until the refactoring, these do not fit in well in SystemTrayItem. Perhaps move
these two into tray_views instead? (similar to SetupLabelForTray)

[jennyz, 2012/07/23 17:22:42]

Done.

+
   // Shows the detailed view for this item. If the main popup for the tray is
   // currently visible, then making this call would use the existing window to
   // display the detailed item. The detailed item will inherit the bounds of the
   // existing window.
   // If there is no existing view, then this is equivalent to calling
   // PopupDetailedView(0, true).
   void TransitionDetailedView();
 
   // Pops up the detailed view for this item. An item can request to show its
   // detailed view using this function (e.g. from an observer callback when
@@ skipping 17 matching lines @@
   void HideNotificationView();
 
  private:
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayItem);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_ITEM_H_